Any idea where the leaking is coming from

 

Without putting hands on it's impossible to know. I do know those engines had an issue with turbo seals leaking oil but there's a bunch of other places it could be coming from as well. Make sure your oil filter is tight.

 

Yup, if the drain trough isn't cleaned properly after an oil change, it'll drip oil till it doesn't. I changed mine over the weekend and I spend nearly as much time cleaning the area around the filter and trough as it takes to perform the maintenance.